baber/WOPTO huggingface dataset:
Patent GB-320435-A (GB)
Title: Improvements in or relating to brakes for automobiles
IPC: B60T13/24
Filed: 1928-07-25
Abstract: 320,435. Cowland, W. G. July 25, 1928. Fluid-pressure.-In automobile brakes actuated by suction from the engine, the piston 3 working in the brake cylinder 1 is fitted with air-admission and suction valves 12, 13 formed as a single unit controlled by a spring 15 and by a sliding tube 8 connected to the brake pedal. Normally the tube 8 bears against the valve unit so as to close the valve 13 and open the valve 12 against the spring 15. When the brake pedal is actuated to apply the brakes, the tube 8 is moved to the left, allowing the spring to close the valve 12, and afterwards opening the valve 13, which allows the suction of the engine to be transmitted by means of a connection 21, ports 17, tube 8, and ports 10 to the closed end of the brake cylinder. As the piston 3 then moves to the right to apply the brakes, the valve 13 is again closed, and the amount of brake pressure is made to correspond to the depression of the pedal. If the engine fails, the brakes are applied directly by the engagement of flanges 16 on the tube 8 with the piston. In modifications, the tube 8 may be connected to the engine by a flexible conduit, and it may be actuated by means of a chain connected to, and working over, an oscillating sector while the brake piston may be connected to the brake shaft by an arrangement of levers. Also the valves may have spherical seats.
Patent GB-336573-A (GB)
Title: Improvements in or relating to the synchronisation of the operation of a kinematograph machine and a gramophone
IPC: G03B31/00
Filed: 1929-07-12
Abstract: 336,573. Jeapes, W. C. July 12, 1929. Shaft couplings.-In synchronously driving a kinematograph and gramophone from a single prime-mover, power is transmitted from the kinematograph to the gramophone through a resilient coupling. The spindle 11 of the kinematograph 10 is driven from the prime-mover through a pulley 12 and is connected to the gramophone turntable spindle 20 by flexible shafts 14, 18 and worm gearing contained in a box 45. The spindle 20, which is mounted in bearings in a box 19, carries at its lower end a four-armed spider 25. A bearing 27 in the lower wall 26 of the box 19 supports a stub-shaft 28 coupled to the flexible shaft 18 and carrying at its upper end a like spider 29, connected by coil springs 34, 37, to the other spider 25. The spindle 20 drives a governor 43 which is set so as to prevent the gramophone over-running the kinematograph. If the kinematograph tends to overrun the gramophone, the coupling springs are put into tension and bring the gramophone into step with the kinematograph, while ensuring smooth running. Specification 328,759 is referred to.
Patent GB-1070572-A (GB)
Title: Nuclear reactor control mechanism
Inventor: TYRRELL OWEN ALEXANDER
IPC: G21C7/12
Filed: 1963-05-29
Abstract: 1,070,572. Controlling reactors. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. May 25, 1964 [May 29, 1963], No. 21569/63. Heading G6C. A control element of a water-cooled nuclear reactor which is formed of a boron steel cylinder, is hydraulically retracted from the core or extended into it by a spring. The element may be given a continuous axial movement for rapid insertion into the core of a stepped movement from a latch and rack escapement. Three separate and adjustable fluid supplies provide the control; one to effect the element axial movement, one to operate the escapement and one to adjust a slide valve which determines whether the element movement is continuous or stepped. To give the element the stepping motion i.e. fine operational movement, the escapement is reciprocated by the intermittent interruption of the escapement fluid supply. For emergency rapid insertion of the element, the fluid supply pressures are adjusted so as to separate the escapement from the element and so place the element under spring control. The control mechanism is immersed in the reactor coolant, the rack is mounted on the control element itself and the latch members are mounted on a tube surrounding the element and are movable with respect to the reactor and element. In a second embodiment the rack is mounted on a separate extension fixed to the control element and the latch members mounted on a tube fixed to the reactor.
Patent GB-1220523-A (GB)
Title: A process for the production of peracetic acid
IPC: C07C409/26
Filed: 1968-05-07
Abstract: 1,220,523. Peracetic acid. AGENCY OF INDUSTRIAL SCIENCE & TECHNOLOGY. 7 May, 1968 [27 Nov., 1967; 12 Dec., 1967; 18 Jan., 1968; 24 Feb., 1968 (2); 5 March, 1968], No. 21625/68. Heading C2C. Peracetic acid is produced by reacting acetaldehyde with oxygen or oxygen-containing gas in an inert solvent, and as catalyst, (i) strongly acidic carboxylic acids below pk a  4.6, strongly acidic phenols or nitric acid; (ii) catalysts as in (i) plus soluble salts of a valencechangeable heavy metal; (iii) acidic salts of polycarboxylic acids below pk a  4À0 or monophenates of strongly acidic dihydric phenols, said salts or monophenates being soluble in the reaction solution and containing a valencechangeable heavy metal as a metal component, or (iv) valence-changeable heavy metal salts of a strongly acidic monocarboxylic acid below pk a  4.6, strongly acidic monophenol, or nitric acid plus hydrogen chloride or its aqueous solution. The oxidation is preferably carried out at a temperature of - 5 to 50 C. under pressure, and if desired, the reaction mixture may be irradiated with U.V. light, or ozone may be introduced.
Patent GB-679783-A (GB)
Title: Improvements in nib sections for fountain pens
IPC: B43K5/18
Filed: 1950-09-01
Abstract: 679,783. Fountain pens. MABIE, TODD & CO., Ltd., and SEARS, E. S. Sept. 1, 1950, No. 21646/50. Addition to 656,673. Class 146 (iii). The subject - matter of this Specification is substantially the same as that in the parent Specification, but also includes a core member 30 fitting within a longitudinal bore into the feed bar 9. The member 30 is provided with  a feed channel 23 along which ink is supplied to the underside of the nib 10 through a slot or opening in the front end of the feed bar.
Patent GB-187380-A (GB)
Title: Improvements in stop-cocks
IPC: F16K5/02
Filed: 1921-08-15
Abstract: 187,380. Heylman, F. C. Aug. 15, 1921. Plug cocks. -A conical valve plug 4 is provided with an operating stem 5 and a stem 6 to assist in centering it. Packing rings 7, 8 are held against the flat shoulders of the plug by flanges 9, 10 secured by studs 11, 12 or alternatively, separate flanged rings are provided to enclose the packing, and the flanges 9, 10 are bolted to these.
Patent GB-317969-A (GB)
Title: Improvements in or relating to brackets or supports for shelves and the like
IPC: A47B96/06
Filed: 1928-07-26
Abstract: 317,969. Auty, C. H. July 26, 1928. Brackets. - A shelf supporting bracket consists of a base plate A provided, centrally of its length, with a projecting portion c having a groove to removably receive one end of the shelf E. The slot may be covered, wholly or in part, with suitable material to provide sufficient friction to prevent vibration of the shelf. Rubber or a spring or springs may be used for this purpose.
Patent GB-1095272-A (GB)
Title: An automatic pipette-device for transferring fluid from one container to another container
IPC: B01L3/02
Filed: 1965-05-21
Abstract: 1,095,272. Pipette holder. CENTRALA A U T O M ATIONSLABORATORIET A.B. CALAB. May 21, 1965 [May 21, 1964], No. 21680/65. Heading B1X. The transfer of a liquid from one test tube to another is effected automatically by causing a pipette suction pipe connected to a suction means (shown in dotted lines) and held in a vertically disposed holder 3 to move in an inverted U-shaped, the test tubes being placed under the vertical branches of the U-shape. Pins at each end of the holder 3 move in U- shaped tracks 1 and 2 and are also displaceable in slots 4 and 5 provided in rotatable levers 6 and 7. The levers 6 and 7 rotate about shafts 8 and 9 (Fig. 2, not shown) driven by a reversable motor 8 through gear wheels 10, 11 and 15. Contacts 12 and 13 and possibly a timing device influence the motor in a desired manner.
Patent GB-1315376-A (GB)
Title: Method and means for controlling the amplification in a laser
IPC: H01S3/086
Filed: 1970-05-06
Abstract: 1315376 Lasers BOFORS AB 6 May 1970 [6 May 1969] 21701/70 Heading H1C In order to nullify the effect of temperature dependent gain variation in a solid laser one of the resonator reflectors is displaceable transverse to the optic axis of the laser. In order to obtain a sufficient output at high temperatures when the gain of the active medium is low the pumping power is made to be high which however at low temperatures when the gain is high results in double pulses being emitted instead of a single pulse particularly during Q-switch operation. The present invention makes use of the fact that the excitation levels in the laser rod 1 due to non-uniform radial pumping by an optical pumping source vary across the cross-section of the rod. In the present case where an elliptical pumping cavity arrangement is used one of the resonator reflectors, in the form of a right angle prism 2, is positioned, at high temperatures, so that its apex coincides with the central longitudinal axis of the laser rod, Fig. 1 (not shown), i.e. the position of maximum pump excitation. At lower temperatures prism 2 is moved transversely of the axis so that the reflected light beam passes through the rod 1 along an axis of lower excitation spaced from the central axis. The gain is therefore lower and double pulsing is prevented. In the arrangement of Fig. 4 the movement of prism 2 is controlled by piston 13 which is moved in accordance with the volume of mercury 10. In an alternative arrangement, Fig. 3 (not shown), the prism 2 is supported by bimetallic legs which bend as the temperature changes to move the prism
Patent GB-1028398-A (GB)
Title: Improvements in electric heater arrangements
Inventor: URRY JOHN THOMAS
IPC: H05B3/50
Filed: 1964-05-26
Abstract: 1,028,398. Electric heating elements. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Feb. 8, 1965 [May 26, 1964], No. 21719/64. Heading H5H. A tubular sheathed heating element is enclosed in an outer tube filled with sintered iron powder, or like material having a high thermal conductivity. A number or U-shaped elements, or a zig-zag folded element, Fig. 5 (not shown), may be used with a solid central core, Fig. 1 (not shown , or a central tube, Fig. 2 (not shown), or a straight heater element may be enclosed by a finned tube, Fig. 4 (not shown).
Patent GB-1435565-A (GB)
Title: Light pen assemblies for use with cathode ray tube displays
IPC: G06F3/037
Filed: 1973-05-08
Abstract: 1435565 Cathode-ray tube accessories SPERRY RAND CORP 8 May 1973 21755/73 Heading H4T [Also in Division G1] A light pen assembly for use with a CRT display 94 includes a fibre-optic bundle 22 arranged to receive an image of the CRT screen by way of a lens 56 disposed before the ends of fibre-optic bundles 22, 24, 26, the second 24 of which passes light from source 32 and projects from its ends a ring of light on to the CRT screen. The image of the ring received by bundle 22 is fed to a photo-diode 30 whereby each time the spot on the phosphor layer 98 of the CRT 96 sweeps across the centre of the projected ring of light a light pulse is fed to the diode and a pulse from the diode to the data processing system 100 determines the point on the CRT face which is at the centre of the ring of light. By pressing the spring-loaded tip 14 of the assembly against the implosion shield 90 of the CRT a spring 62 is deflected in front of a part 24b of the bundle of fibres 24 which part bundle passes with bundle 26 down the bore 54, whereby light is reflected back along fibre bundle 26 to photo-conductor cell 34 which generates a gating signal to interrupt the data processing system 100 so that an operator may modify the data on the CRT display at the centre of the light ring. When the tip is not depressed, light from the part bundle 24b passes to a light-absorbing washer 60.
Patent GB-845621-A (GB)
Title: Improvements relating to compensatory suspension arrangements for vehicles
IPC: B60G21/06
Filed: 1957-07-10
Abstract: 845,621. Road vehicle spring suspensions. DAIMLER-BENZ A.G. July 8, 1958 [July 10, 1957], No. 21884/58. Class 108(2). A vehicle suspension system comprises hydraulic levelling cylinders 6-9 associated with the road wheels, reversible action hydraulic gear pump/motors 16-21 connected to the cylinders by pipes 10-15, rigid connections A, B between the driven gears of pump motors 18, 19 and 20, 21 respectively, torsion bar springs F3, F4 connected between the driven gears of pump/motors 19, 20 and 16, 17 respectively and hydro-pneumatic springs F1, F2. The above system, in addition to effecting levelling of the vehicle, automatically renders' operative one or a combination of springs F1-F4, which are of different degrees of softness, in accordance with differing road and driving conditions. During braking and accelerating, or when one pair of wheels passes over a bump, spring FI-F3 operate together, whilst when cornering, or when diagonally disposed wheels are moved in the same direction, spring F4 alone is operative. The system may incorporate damping valves (not shown) each having a different resistance for different direction of flow. In a modification (Fig. 2 not shown) springs F1, F2 are replaced by a single hydro-pneumatic spring.
Patent GB-712731-A (GB)
Title: Improvements in or relating to metal drawing press
IPC: B21D24/12
Filed: 1952-09-02
Abstract: 712,731. Cupping. CLEARING MACHINE CORPORATION. Sept 2, 1952 [May 21, 1952], No. 22061/52. Class 83 (4) A mechanical drawing-press comprises a frame structure including a bed, a blank-holder slide slidably mounted on the frame structure, a drawslide s'idably mounted in the blank-holder slide and movable with respect thereto, blankholder slide operating-mechanism mounted on the frame structure, draw-slide operating- mechanism including an eccentric mounted for bodily movement with the blank holder slide, drive means for the blank-holder slide operating- mechanism and drive means for operating the eccentric, both of said drive means being mounted on said frame structure. The blankholder slide 5 is supported on pull rods 8 connected at their lower ends by crossheads 10, reciprocated from a main drive shaft 14, Figs. 1, 6 and 9, through gearing 16, 17, eccentrics and straps 20, 21, crossheads 23 and linkages 26-29. The draw-slide 7, Fig. 4, is supported by pull rods 45 on crossheads 44 which are reciprocated by eccentrics 40 on shafts 38 which are carried on the crossheads 10. The shafts 38 are driven through gearing 53, 54 from the drive shaft 14 and in order that the gears 53, 54 may remain in mesh during movement of the blankholder slide, the shafts 38 and mechanism mounted thereon are transversely movable in guideways 55, and are connected to the drive shaft by links 57, 58. The position of the draw-slide with respect to the bed may be adjusted by motor-driven worm gearing at the top of the pull rods 45, Fig. 4.
Patent GB-163938-A (GB)
Title: Improvements in and relating to closures for glasses for preserved fruits and the like
IPC: B65D51/16
Filed: 1920-07-26
Abstract: 163,938. Geering, H. July 26, 1920. Vacuum closures.-A closure for glasses for preserved fruits &c. comprises a lid 4, Fig. 1, which has a tapered depression 5 having a small orifice 6 in its cup-shaped bottom, and a softrubber stopper 7 fitting into the depression and having a narrow central slot 8 normally kept closed by atmospheric pressure. The stopper may be made in halves which form the slot between them. To open the vessel, an opener 9, Fig. 4, is inserted in the slot to allow air to enter the vessel through a passage 10 in the opener so that the lid may be removed easily. In a modification, a flat pin 17, Fig. 5, inserted permanently in the slot 15 is twisted to open the slot to allow air to enter the vessel. A label is stuck over the top of the depression in the lid.
Patent GB-850606-A (GB)
Title: A process for the production of alkali metal and alkaline earth metal borohydrides
IPC: C01B6/00
Filed: 1957-07-12
Abstract: Trialkyl amines are produced by splitting an N-trialkyl borazane with either an alkali metal or alkaline earth metal compound of general formula MeX or MeX2 where Me represents a metal radical and X a hydrogen atom or R or OR where R is an aliphatic, aromatic or hydro-aromatic hydrocarbon radical, or with a complex of any of these compounds with boric acid ester or a boron alkyl.  The formation of the trialkyl amine together with alkali metal or alkaline earth metal borohydrides as by-products (see Group III) is carried out either in an inert organic liquid, e.g. a hydrocarbon, preferably having a different b.pt. to that of the borohydride by-product formed or in an excess of the trialkyl borazane reactant.  Reaction temperatures of between 80 DEG C. and the decomposition temperature of the alkali metal or alkaline earth metal borohydride by-product and preferably of 100-150 DEG C. are employed.  The reaction is preferably effected in an atmosphere of N2 with exclusion of moisture.  Trialkyl amine is separated from the reaction products by fractional distillation under reduced pressure or by solvent extraction.  The trialkyl borazane is preferably used in stoichiometric excess of the metal compound or metal compound complex, any excess being subsequently recovered.ALSO:Alkali metal or alkaline earth metal borohydrides are produced by splitting an N-trialkyl borazane with either an alkali metal or alkaline earth metal compound of general formula MeX or MeX2 where Me represents a metal radical and X a hydrogen atom or R or OR where R is an aliphatic, aromatic or hydroaromatic hydrocarbon radical, or with a complex of these compounds with boric acid ester or a boron alkyl.  The N-trialkyl borazane is prepared from a boron hydrocarbon alkyl, a tertiary amine and hydrogen by heating under pressure.  The formation of the borohydrides is carried out either in an inert organic liquid e.g. a hydrocarbon, preferably having a different boiling point to that of the borohydride formed or in an excess of the trialkyl borazane reactant.  Reaction temperatures of between 80 DEG C. and the decomposition temperature of the alkali metal or alkaline earth metal borohydride and preferably of 100-150 DEG C. are employed.  The reaction is preferably effected in an atmosphere of N2 with the exclusion of moisture.  Reaction products are separated either by fractional distillation under reduced pressure or by solvent extraction using solvents in which the metal borohydrides are insoluble.  The trialkyl borazane is preferably used in stoichiometric excess of the metal compound, any excess being subsequently recovered.  Trialkyl amines liberated during the reaction may be used to prepare more N-trialkyl borazanes.
Patent GB-930912-A (GB)
Title: An electro-erosion machine tool
IPC: B23H1/00
Filed: 1960-06-24
Abstract: 930,912. Automatic control of spark-erosion. A. L. LIVSHITS, M. J. BRISKMAN, A. T. KRAVETS, S. S. PODLAZOV, V. N. SOLOVOV, D. F. YAKHIMOVICH, and N. I. BLITSTEIN. June 24, 1960, No. 22262/60. Class 38 (4). [Also in Group XXII] An electro-erosion machine has its erosion gap EG, Fig. 8, fed by an impulse generator G1 and a control signal derived therefrom regulated by potentiometer R 1  is amplified first by transistors 1T, 2T and then by differential magnetic amplifiers 1MV6, 1MV7, 2MV6, 2MV7 and fed to the armature of tool feed motor 10. The latter has a field OB. Positive feedback is provided in the magnetic amplifier and negative feedback from the armature to the transistors through diode D. In another embodiment, Fig. 9 (not shown), a plurality of spark gap circuits are supplied by a common impulse generator and the gap is controlled by the voltage drop across the circuit carrying the greatest current. In another embodiment, Fig. 10 (not shown), two spark gaps are supplied by separate generators which may operate out of phase with each other. In a further embodiment, Fig. 11, a control signal from the spark gap, limited by shunt circuit D 1 , R 1  is applied to the left-hand grid of valve L 1 , whose cathode resistor R 2  is connected to the right-hand grid of valve L 2  controlling the winding OV 1  of a rotary amplifier EMV supplying the feed motor M. The right-hand half of valve L 1  is meanwhile shut off by a signal from resistor R 2  applied through transferrer Tp and rectifier B. Upon shortcircuit conditions no signal is applied to the lefthand grid of L 1  but its right-hand half conducts and a signal is then passed from R 3  to the lefthand half of valve L 2  which energizes winding OV 1  to cause reversal of the feed motor M and retraction of the tool. Relay P switches the motor M for rapid withdrawal of the tool.
Patent GB-500582-A (GB)
Title: Improvements in or relating to the colouration of textile materials
IPC: D06P1/28
Filed: 1937-08-13
Abstract: 500,582. Colouring cellulose esters. MONCRIEFF, R. W., and COOKE, A. W. M. Aug. 13, 1937, No. 22305. [Class 15 (ii)] Textile and other materials, such as films, foils, sheets or moulded articles, having a basis of an organic ester of cellulose, are coloured by immersion in a liquid medimn containing a saponifying agent for the ester and a salt of an acid ester of a leuco vat dyestuff, followed by conversion of the salt into the vat dyestuff on the materials. Specified saponifying agents are methylamine, ethylenediamine, benzylamine, cyclohexylamine, guanidine, caustic soda or potash and alkali carbonates and, according to the Provisional Specification, any of the saponifying agents referred to in Specification 417,220 or 429,103. In an example, an aqueous liquor at 25‹ C. containing methylamine, Soledon jade green XS and Indigosol olive green IB, with an addition of sodium chloride, if desired, to increase the depth of shade, is passed for 5 hours alternately from the outside to the inside and vice versa of perforated bobbins carrying stretched cellulose acetate yarn, the bobbins are washed with cold water and dilute nitrous acid is then similarly passed to-and-fro for ¢ hour during which the temperature is raised to 60‹ C. ; a full green shade, fast to scouring, is obtained ; the dyestuffs may be replaced by Soledon blue 4BCS to obtain a blue shade. According to the Provisional Specification an agent, e.g. copper, which accelerates the saponification, may be employed as described in Specifications 430,349 and 430,351.
Patent GB-1343147-A (GB)
Title: Hydropneumatic suspension arrangement for a motor vehicle
IPC: B60G11/26
Filed: 1971-04-19
Abstract: 1343147 Vehicle suspension units INDUSTRIAL DEVELOPMENT CO ESTABLISHMENTS 19 April 1971 [24 Feb 1970] 22342/71 Heading B7D In a hydro.pneumatic suspension unit having as described in Specification 1,260,719 a tripleacting differential piston 101 forming in a cylinder 105 a fluid chamber 13 communicating with a hydro-pneumatic spring 10 and a further pair of chambers 23, 24 for connection in crossover fashion to the corresponding chambers of a similar unit on the oppoiste side of a vehicle to provide roll resistance, the piston 101 has two co-axial portions 102, 103 in sliding and sealing engagement with the cylinder 105, and surrounding a part of the piston 101 between the portions 102, 103 is a radially-floating ring 111 which is in sealing engagement with the piston and in sliding and sealing engagement with the cyclinder 105, the ring 111 being restrained against axial movement on the piston but free to move radially thereon to accommodate alignment error. A thrust rod 118 connected to the piston 101 by a ball-joint 117 is either connected to a rear axle 130 through a bell crank lever 131 and an adjustable link 136 as shown or connected to the lower arm of an independent front suspension. A stack of rigid rings 107 and deformable sealing rings 108 seals the portion 103 of the piston 101.